provisional=arranged or existing for the present, possibly to be changed later，相当于temporary，临时的，暂时的
Our class teacher（班主任）has chosen a provisional class monitor for us and the election of an official monitor will take place two months later.
issue sb with sth= supply sb with sth，给某人分发某物
The teacher is issuing students with notebooks.
cot 幼儿床，可数
My relatives have bought large numbers of cots for my future babies but I’m not even married.
verdict常作“判决”讲，但是也可以作“结论”讲，相当于an opinion or judgement.
The verdict on this portable computer by our expert on digital devices is “bad value for money”.
beware= be cautious and alert to the dangers of…，作vi后常跟of（注意和be aware of的区别，be aware of是意识到…的意思，beware of是当心…），也可以作vt后跟当心的东西
Customers should beware of fake products.
Customers should beware fake products.
Customers should beware buying fake products.
tester= a person who tests something, especially a new product.（新品）检测者，可数
Testers gave a great deal of positive feedback to our new product.
on the plus side=from a favorable view or perspective,好的一面是…；on the minus side= used to describe the less appealing or attractive part of sth,不好的一面是...
I didn’t manage to get the ticket to the concert by my idol. On the plus side, I saved quite a little money.
The new smartphone I bought recently works smoothly and has almost the best sound quality. On the minus side, it’s too delicate and easy to break.
positive和negative都可以作名词，表示优点和缺点，都可数
Please write a report on the positives and negatives of this research approach.
niggle= a trifling（琐屑的）complaint, dispute, or criticism. 小牢骚，可数
The only niggle people have with this book is its unattractive cover.
discontinue=cease doing or providing sth, typically sth provided on a regular basis.终止…，vt
Joe has decided to discontinue riding a bike to school. Instead, he will drive his sports car to school from now on.
